Updated July 2026 7 TOOLS • 21 GUIDES • ALL FREE

7 Free Drone Compliance Tools for UK Pilots (2026)

Airspace, weight, registration, planning, knowledge, insurance, checklists — the seven questions the CAA framework asks of every flight, and the free tools that answer them. Each tool gets three guides: the best free picks, how to use it, and why you need it.

The short answer

Drone compliance in the United Kingdom starts before take-off, and seven free tools cover the whole preflight stack. An airspace checker tells you whether the spot is legal and whether an airport Flight Restriction Zone means you need permission first. A weight calculator tells you which side of the 250 g line your aircraft falls on, and a registration checker whether you need an Operator ID as well as a Flyer ID. A flight planner briefs the operation at or below 120 m (400 ft), a regulation quiz keeps Drone Code knowledge sharp, an insurance calculator estimates the cover a job needs, and a checklist generator makes the whole routine repeatable. None of them replace official CAA sources — always verify — but together they catch most problems while they are still cheap to fix. Below: all seven, with 21 guides.

The stack

The seven free tools every UK pilot should know

Each tool answers one compliance question before you fly. Together they cover the CAA framework from airspace to paperwork:

  • Airspace checker — is this location legal to fly, and does an airport Flight Restriction Zone mean permission from ATC or the aerodrome operator first
  • Weight calculator — which CAA rules apply to your actual take-off weight, on either side of the 250 g line
  • Flight planner — site, altitude at or below 120 m (400 ft), airspace, visual line of sight, people on the ground, and a plan for changes
  • Registration checker — do you need an Operator ID, a Flyer ID or both, and is an existing registration still current
  • Regulation quiz — is your Drone Code knowledge still sharp enough to fly on
  • Insurance calculator — roughly what cover a specific job calls for, before you bid
  • Checklist generator — a repeatable preflight sequence so compliance never depends on memory
New to UK drone rules? Read our complete UK drone law guide for the CAA framework — Flyer ID, Operator ID, Flight Restriction Zones and operating limits — before you build your tool stack.
The complete index

All 21 guides, by tool

Every tool has three dedicated guides: a comparison of the best free options, a step-by-step how-to, and the case for why it belongs in your preflight stack. Find yours below.

Airspace Checker (3)

Airspace Checker: Best Free Picks Airspace Checker: How to Use Airspace Checker: Why You Need One

Checklist Generator (3)

Checklist Generator: Best Free Picks Checklist Generator: How to Use Checklist Generator: Why You Need One

Flight Planner (3)

Flight Planner: Best Free Picks Flight Planner: How to Use Flight Planner: Why You Need One

Insurance Calculator (3)

Insurance Calculator: Best Free Picks Insurance Calculator: How to Use Insurance Calculator: Why You Need One

Registration Checker (3)

Registration Checker: Best Free Picks Registration Checker: How to Use Registration Checker: Why You Need One

Regulation Quiz (3)

Regulation Quiz: Best Free Picks Regulation Quiz: How to Use Regulation Quiz: Why You Need One

Weight Calculator (3)

Weight Calculator: Best Free Picks Weight Calculator: How to Use Weight Calculator: Why You Need One
Important

Why compliance tools matter before you fly

The CAA framework asks real questions of every flight, and the time to answer them is before launch, not after:

  • Registration splits in two — a Flyer ID comes from the CAA's free online theory test, and an Operator ID is required for drones of 250 g or more or with a camera, displayed on the aircraft
  • Airport FRZs bind every drone — roughly 2 to 2.5 nautical miles around the aerodrome plus 5 km by 1 km runway corridors, with permission from ATC or the aerodrome operator required, including for sub-250 g drones
  • Limits apply everywhere — the 120 m (400 ft) ceiling, visual line of sight and the rule against flying over crowds apply regardless of weight
  • Breaches carry real fines — common offences can attract fines of up to around £2,500
  • Tools are aids, not authorities — free tools catch problems early, but the CAA's official sources decide; always verify before you rely on a result
Source: CAA — Drones →
Method

The 5-step free preflight stack

Run the tools in this order before every flight, and most compliance problems surface while they are still easy to fix:

1

Check the aircraft

Run the weight calculator and registration checker: know your take-off weight, which side of the 250 g line it falls on, and that your Flyer ID and any required Operator ID are current and displayed.

2

Check the airspace

Use an airspace checker to see what is over your site — and if it sits inside a Flight Restriction Zone, get permission from air traffic control or the aerodrome operator before you fly.

3

Plan the flight

Brief the operation with a flight planner: altitude at or below 120 m (400 ft), visual line of sight throughout, people and structures to keep clear of, and what you will do if conditions change.

4

Check yourself

A quick regulation quiz keeps Drone Code knowledge sharp, and an insurance estimate confirms a commercial job carries sensible cover.

5

Run the checklist

Generate and run your preflight checklist at the site, then verify anything uncertain against official CAA sources before you launch.

Common questions

Frequently asked questions

A complete free preflight stack has seven pieces: an airspace checker to confirm the location is legal and outside any airport Flight Restriction Zone, a weight calculator to see whether the 250 g line puts you in Operator ID territory, a registration checker to confirm which CAA IDs you need, a flight planner to brief the operation, a regulation quiz to keep Drone Code knowledge sharp, an insurance calculator to estimate the cover a job needs, and a checklist generator for preflight discipline. None of them cost anything, and together they cover the questions the CAA framework asks of every flight. Our 21 guides compare the best free options and show how to use each one.
Every UK airport with air traffic control sits inside a Flight Restriction Zone: roughly a 2 to 2.5 nautical mile circle around the aerodrome, plus 5 km by 1 km corridors extending from each runway end. Flying inside an FRZ without permission from air traffic control or the aerodrome operator is an offence, and the restriction applies to every drone, including sub-250 g models. Before each flight, check your location in an airspace app; Drone Assist from NATS is the most widely used, showing FRZs, restricted airspace and hazards on a map. Do this before you travel to the site, and verify against official CAA sources rather than relying on any single app.
The UK system splits registration in two. A Flyer ID shows the person flying has passed the CAA's free online theory test on the Drone Code. An Operator ID is for whoever is responsible for the drone, is required for drones weighing 250 g or more or fitted with a camera, and must be displayed on the aircraft. The same person often needs both, but they answer different questions: can you fly, and who is accountable for this aircraft. A registration checker walks through what the drone weighs, whether it has a camera and who operates it, and gives a clear answer. Always confirm the result on the CAA's own registration pages, because the official source decides, not the tool.
The 250 g threshold decides your registration duties. At 250 g or more, the person responsible for the drone needs an Operator ID from the CAA, and camera-equipped drones need one at any weight. The flying rules do not disappear below 250 g: the 120 m (400 ft) ceiling, visual line of sight, the rule against flying over crowds and every airport Flight Restriction Zone apply to all drones. A weight calculator adds up the aircraft, battery and any payload so you know which side of the line your actual take-off configuration falls on, because a 249 g drone with a heavier battery or an accessory attached can cross the threshold without you noticing.
A basic UK flight plan answers five questions before take-off: where you are flying and what the airspace requires, including whether a Flight Restriction Zone means you need permission from ATC or the aerodrome operator; what altitude you will hold, at or below the 120 m (400 ft) ceiling; who and what is on the ground, keeping well clear of crowds and uninvolved people; whether you can keep the drone in visual line of sight for the whole flight; and what you will do if something changes, such as weather or a new restriction. A free flight planner turns those questions into a briefing you can review in minutes. Our guides compare the free options step by step.
There is no single number, because the right cover depends on the job: where you are flying, what is underneath the flight path, the client's contract requirements, and the value of the equipment itself. A free insurance calculator helps you think through those factors and arrive at a sensible estimate of the cover a specific operation calls for, rather than guessing. It does not quote prices, and neither do we; actual premiums come from insurers and vary widely. Many UK clients, venues and landowners require proof of cover before commercial work, so check the CAA's guidance on what applies to your operation and estimate before you bid. Our guides compare the free estimating tools.
Passing the Flyer ID test once is not the end of learning. The test is free, taken online through the CAA, and covers the Drone Code: the 120 m (400 ft) ceiling, visual line of sight, keeping clear of crowds and staying out of airport Flight Restriction Zones. Knowledge fades between flights, and common breaches of these rules can attract fines of up to around £2,500. A free regulation quiz keeps the knowledge active: a few questions a week on airspace, registration and operating limits surface the gaps before they surface in the field. Quizzes are practice aids, not official tests, so treat the CAA's own materials as the authority whenever an answer surprises you.
Most compliance failures are skipped steps, not acts of defiance. A pilot forgets to check for a Flight Restriction Zone, launches without a current Operator ID displayed on the aircraft, or drifts above the 120 m ceiling, and a routine flight becomes an offence. A preflight checklist turns the CAA framework into a sequence you run every time: airspace and FRZs confirmed, permission in hand where needed, Flyer ID and Operator ID current, altitude plan at or below 120 m (400 ft), visual line of sight maintained. A free checklist generator builds that sequence for your aircraft and operation, so discipline never depends on memory. Our guides show how to set one up.
They are a strong start, and for many recreational and small commercial pilots they cover the routine: airspace awareness, weight and registration checks, flight planning, knowledge upkeep and checklists all have capable free options, with Drone Assist from NATS widely used for UK airspace. Two honest caveats. First, no tool replaces official sources; the CAA's own pages decide what the rules are, so verify anything a tool tells you before relying on it. Second, complex operations and larger teams eventually want the depth paid ops platforms add, such as fleet records and audit-ready logs. Start free, verify with the CAA, and upgrade only when your operations outgrow the free stack.
TS

Takayuki Sawai

Certified Administrative Scrivener (Gyoseishoshi). Researches drone compliance across 10 countries, including UK CAA rules, drone compliance tools, Flight Restriction Zones and drone registration. Over 20 years in Hiroshima prefectural administration.

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